SERVICE MANUAL

Color Inkjet Printer

EPSON Stylus Photo R280/R285/R290

SEIJ07003

Notice:
    All rights reserved. No part of this manual may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SEIKO EPSON CORPORATION. The contents of this manual are subject to change without notice. All effort have been made to ensure the accuracy of the contents of this manual. However, should any errors be detected, SEIKO EPSON would greatly appreciate being informed of them. The above not withstanding SEIKO EPSON CORPORATION can assume no responsibility for any errors in this manual or the consequences thereof.

EPSON is a registered trademark of SEIKO EPSON CORPORATION.

General Notice:

Other product names used herein are for identification purpose only and may be trademarks or registered trademarks of their respective owners. EPSON disclaims any and all rights in those marks.

PRECAUTIONS
Precautionary notations throughout the text are categorized relative to 1) Personal injury and 2) damage to equipment. DANGER Signals a precaution which, if ignored, could result in serious or fatal personal injury. Great caution should be exercised in performing procedures preceded by DANGER Headings. Signals a precaution which, if ignored, could result in damage to equipment.

WARNING

The precautionary measures itemized below should always be observed when performing repair/maintenance procedures.

DANGER
1. 2. 3. ALWAYS DISCONNECT THE PRODUCT FROM THE POWER SOURCE AND PERIPHERAL DEVICES PERFORMING ANY MAINTENANCE OR REPAIR PROCEDURES. NO WORK SHOULD BE PERFORMED ON THE UNIT BY PERSONS UNFAMILIAR WITH BASIC SAFETY MEASURES AS DICTATED FOR ALL ELECTRONICS TECHNICIANS IN THEIR LINE OF WORK. WHEN PERFORMING TESTING AS DICTATED WITHIN THIS MANUAL, DO NOT CONNECT THE UNIT TO A POWER SOURCE UNTIL INSTRUCTED TO DO SO. WHEN THE POWER SUPPLY CABLE MUST BE CONNECTED, USE EXTREME CAUTION IN WORKING ON POWER SUPPLY AND OTHER ELECTRONIC COMPONENTS. WHEN DISASSEMBLING OR ASSEMBLING A PRODUCT, MAKE SURE TO WEAR GLOVES TO AVOID INJURIER FROM METAL PARTS WITH SHARP EDGES.

4.

WARNING
1. 2. 3. 4. 5. 6. REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REPAIR TECHNICIAN. MAKE CERTAIN THAT THE SOURCE VOLTAGES IS THE SAME AS THE RATED VOLTAGE, LISTED ON THE SERIAL NUMBER/RATING PLATE. IF THE EPSON PRODUCT HAS A PRIMARY AC RATING DIFFERENT FROM AVAILABLE POWER SOURCE, DO NOT CONNECT IT TO THE POWER SOURCE. ALWAYS VERIFY THAT THE EPSON PRODUCT HAS BEEN DISCONNECTED FROM THE POWER SOURCE BEFORE REMOVING OR REPLACING PRINTED CIRCUIT BOARDS AND/OR INDIVIDUAL CHIPS. IN ORDER TO PROTECT SENSITIVE MICROPROCESSORS AND CIRCUITRY, USE STATIC DISCHARGE EQUIPMENT, SUCH AS ANTI-STATIC WRIST STRAPS, WHEN ACCESSING INTERNAL COMPONENTS. REPLACE MALFUNCTIONING COMPONENTS ONLY WITH THOSE COMPONENTS BY THE MANUFACTURE; INTRODUCTION OF SECOND-SOURCE ICs OR OTHER NON-APPROVED COMPONENTS MAY DAMAGE THE PRODUCT AND VOID ANY APPLICABLE EPSON WARRANTY. WHEN USING COMPRESSED AIR PRODUCTS; SUCH AS AIR DUSTER, FOR CLEANING DURING REPAIR AND MAINTENANCE, THE USE OF SUCH PRODUCTS CONTAINING FLAMMABLE GAS IS PROHIBITED.

About This Manual
This manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of the printer. The instructions and procedures included herein are intended for the experienced repair technicians, and attention should be given to the precautions on the preceding page.

Manual Configuration
This manual consists of six chapters and Appendix. CHAPTER 1.PRODUCT DESCRIPTIONS Provides a general overview and specifications of the product. CHAPTER 2.OPERATING PRINCIPLES Describes the theory of electrical and mechanical operations of the product. CHAPTER 3.TROUBLESHOOTING Describes the step-by-step procedures for the troubleshooting. CHAPTER 4.DISASSEMBLY / ASSEMBLY Describes the step-by-step procedures for disassembling and assembling the product. CHAPTER 5.ADJUSTMENT Provides Epson-approved methods for adjustment. CHAPTER 6.MAINTENANCE Provides preventive maintenance procedures and the lists of Epsonapproved lubricants and adhesives required for servicing the product. APPENDIX Provides the following additional information for reference: • Electrical circuit boards schematics

Symbols Used in this Manual
Various symbols are used throughout this manual either to provide additional information on a specific topic or to warn of possible danger present during a procedure or an action. Be aware of all symbols when they are used, and always read NOTE, CAUTION, or WARNING messages.
A D J U S T M E N T R E Q U IR E D

Indicates an operating or maintenance procedure, practice or condition that is necessary to keep the product’s quality.

C A U T IO N

Indicates an operating or maintenance procedure, practice, or condition that, if not strictly observed, could result in damage to, or destruction of, equipment. May indicate an operating or maintenance procedure, practice or condition that is necessary to accomplish a task efficiently. It may also provide additional information that is related to a specific subject, or comment on the results achieved through a previous action. Indicates an operating or maintenance procedure, practice or condition that, if not strictly observed, could result in injury or loss of life.

C H E C K P O IN T

W A R N IN G

Indicates that a particular task must be carried out according to a certain standard after disassembly and before re-assembly, otherwise the quality of the components in question may be adversely affected.

 Shelf life Two years from production date (if unopened), six months after opening package.  Storage Temperature Table 1-3. Storage Temperature
Situation When stored in individual boxes When installed in main unit Storage Temperature -20 to 40 (-4oF to 104oF)
oC oC

Paper feed method Paper path Paper feed rates PF interval

Limit

-20 oC to 40 oC (-4oF to 104oF)

1 month max. at 40 oC (104oF)

 Dimension 12.7 mm (W) x 68 mm (D) x 47 mm (H)
C A U T IO N

  

The ink cartridge cannot be refilled. Do not use expired ink cartridges. The ink in the ink cartridge freezes at -16 °C (3.2 oF). It takes about three hours under 25 °C (77oF) until the ink thaws and becomes usable.

“Y” in the “P” column stands for “the paper type/size is Supported”. “Y” in the “B” column stands for “Borderless printing is available”.

Chapter 1 Product Description

1.2 Printing Specifications

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Revision B

C A U T IO N

    

Make sure the paper is not wrinkled, fluffed, torn, or folded. The curve of paper must be 5 mm or below. When printing on an envelope, be sure the flap is folded neatly. Do not use the adhesive envelopes. Do not use double envelopes and cellophane window envelopes.

Note : If the printer is not operated for more than three minutes, the printer shifts into the standby mode and reduces the current to the motor to conserve power.

Temperature (°C/°F)

Figure 1-3. Temperature/Humidity Range
C A U T IO N





When returning the repaired printer to the customer, make sure the Printhead is covered with the cap and the ink cartridge is installed. If the Printhead is not covered with the cap when the printer is off, turn on the printer with the ink cartridge installed, make sure the Printhead is covered with the cap, and then turn the printer off.

Chapter 1 Product Description

1.4 General Specifications

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Revision B

1.4.3 Durability
 Total print life: Black 16,000 pages (A4, 3.5% duty), Color 10,000 pages (A4, 5% duty), or five years which ever comes first Six billions shots (per nozzle) or five years which ever comes first

1.5.3 Operation Buttons & LEDs Functions
Detailed information on the buttons and LEDs functions are listed below. Table 1-13. Operation Button Functions (During Normal Operation)
Button Power Function • Turns the power ON/OFF • Runs a sequence of ink cartridge replacement. The carriage moves to set the ink cartridge to the position for replacement. • Moves the carriage to set the ink cartridge to the ink check position when ink level low, ink out, or no ink cartridge error has occurred. • When an ink cartridge has been set in the ink check position, moves the carriage to set the cartridge to the position for replacement, or to set another cartridge to the ink check position. • When an ink cartridge has been set in the ink replacement position, moves the carriage to the home position. • Feeds or ejects paper. • Recovers from a multi-feed error and feeds paper to restart the print job. • Feeds paper when paper is loaded after a no-paper error occurs. • Ejects a jammed paper when a paper jam error occurs. • Cancels the print job during printing. • Runs a head cleaning. • Runs a sequence of ink cartridge replacement when ink level low, ink out, or no ink cartridge error has occurred. • Prints a nozzle check pattern*3. • Forcefully turns the power OFF.

Ink

1.5.2 Indicators (LEDs)
Three indicators (LEDs) are provided to indicate settings or printer status. Table 1-12. Indicators (LEDs)
LED Power LED (green) Ink LED (orange)*1 Paper LED (orange)*1 Function Lights at power-on. Flashes during some sequence is in progress. Flashes at high speed during power-OFF sequence. Lights or flashes when an ink-related error occurs.*2 Lights or flashes when an paper- or CD-R-related error occurs.*2 Paper

Note *1:The Ink LED and Paper LED stay OFF when printing from PC. *2:See Table 1-15 “Indicators (LEDs) Function” for the LED status at error occurrence. Power LED Ink LED Paper LED

Ink (when held for three seconds or longer) Power + Paper *1 (combination) Power + Ink *2 (combination)

Note 1: First press the Paper button and then Power button. The printer will turn On and print the nozzle check pattern. 2: First press the Power button and then Ink button. Hold them for seven seconds. 3: The nozzle check pattern printed by the printer is shown in Figure 1-5. Power Button Ink Button Paper Button

Note : The numbers shown in the figure are nozzle numbers. The numbers and color names are not printed on an actual nozzle check pattern.

Figure 1-5. Nozzle Check Pattern

No change Repeats turning On and Off every 1.25 seconds. Repeats On for 0.5 seconds, Off for 0.5 seconds, On for 0.5 seconds, and Off for 1.0 second. Flash at high speed: Repeats turning On and Off every 0.5 seconds. Flashes alternately 1: same as the “Flash” Flashes alternately 2: Repeats turning Off and On every 1.25 seconds. When two or more errors occur at the same time, the one with higher priority will be indicated. The all LEDs light for 0.2 seconds when a reset request is received.

Note *1: *2:

Chapter 1 Product Description

1.5 Operation Buttons & Indicators (LEDs)

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1.5.4 Errors & Remedies
Table 1-16. Errors & Remedies
Error Fatal error Maintenance request Error A mechanical error has occurred. Waste ink pads need to be replaced. • The CD-R guide (stacker) position does not match with the print job. • The CD-R guide (stacker) is in the CD-R printing position at power-ON. A paper jam has occurred. Paper jam Remedies Turn the power Off and back it On. Replace the waste ink pads and reset the counter. Attach the CD-R guide (stacker) to the proper position.

Failed to feed paper. Multiple sheets of paper were fed at the same time. A CD-R tray were not detected. The cartridge has run out of ink. Ink cartridge(s) was not detected.

For more information on the remedies, see 3.2 Error Indications and Fault Occurrence Causes. When the CD-R guide (stacker) is attached to the upper position (CD-R print position), attach the guide to the lower position and press the Paper button. When the CD-R tray has been inserted, remove the CD-R tray and press the Ink button.

Chapter 1 Product Description

1.5 Operation Buttons & Indicators (LEDs)

20

CHAPTER

2
OPERATING PRINCIPLES

EPSON Stylus Photo R280/R285/R290

Revision B

2.1 Overview
This chapter describes the operating principles of the printer mechanism and electric circuit boards of Stylus Photo R280/R285/R290.

Cover Open Sensor

PF Encoder Sensor

APG Sensor

2.1.1 Printer Mechanism
The main components of the printer mechanism are shown in the table below. Table 2-1. Printer Mechanism Main Components
Component CR Unit Function Moves along the CR shaft to print on paper being powered by the CR motor. The unit includes Printhead, PW sensor, and CR encoder sensor. Moves the carriage upward/downward to adjust the platen gap being powered by the PF motor. There are 4 preset levels of platen gap and the unit moves the carriage to one of the levels according to the current carriage position detected by the APG sensor. Rotates the PF roller shaft to feed paper being powered by the PF motor. Being powered by the PF motor, feeds paper loaded on the ASF into the printer mechanism. Being powered by the PF motor, ejects paper or the CDR tray. The EJ frame moves corresponding to the stacker position so that the frame matches with the paper size.

Located on the right side of the printer mechanism. Covers the printhead with the Ink System cap holder when the printhead is not used, and draws waste ink out of the printhead. The waste ink is sent to the Waste Ink Tray through the waste ink tube.

The main control boards are shown in the table below. Table 2-2. Main Control Boards
Board Main Board Power Supply Board (P/S ASSY) Panel Board Function Located on top of the printer mechanism and controls all over the printer operations. Located on the Lower Housing and generates required voltages for the printer using the power supplied from the AC power line. Located inside the Panel Unit and controls the operation panel.

2.2.1 Main Features
The circuits support multi-common printing method that achieves high-speed printing reducing the number of carriage movements.
Printer

 Features of C691Main Board  An EEPROM and a reset circuit are mounted individually to reduce the cost. This is achieved by removing a complex RTC circuit that is mounted on the previous model (R260/R265/R270/R360/R380/R390). Stylus Photo R280/ R285/R290 do not need the complex RTC circuit because a backup timer is not required for them.
Panel Board

 Power switch read-in circuit  LED driving circuit

 Operations to reduce power consumption The printer carries out the following operations to go into sleep mode.       Decreases the power voltage. Shuts off photoelectric current of photo interrupter sensors. Stops the motor drive circuit. Stops some part of the clock in the ASIC. De-energizes the motors. Makes the head drive circuit go into standby state.

2.3 Banding Reduction System (BRS) / Paper Feed Amount Profile Correction (PFP)
 Overview In order to ensure high print quality and high print speed, this product incorporates the Banding Reduction System (BRS) and Paper Feed Profile (PFP) Correction system. The overview of them is described in the table below. Table 2-6. Overview of BRS and PFP
Summary
Paper Type

Target Print Mode
Paper Size Resolutions (dpi)

Remarks

BRS

Conventional models perform overlapping printing (2-path or 4path print) to reduce banding problem. Printers that incorporate the Banding Reducing System do not perform the overlapping printing. They carry out 1-path printing correcting ink drop amount for each raster mode in order to avoid making a gap between each path (printed line). This enables to achieve both high print quality (less banding) and high print speed. In the conventional method to improve paper feed accuracy, the adjustment value is calculated based on a value obtained at a certain point of paper. Therefore, correcting the total paper feed amount (from when paper is fed and to when finishing printing) was impossible. The Paper Feed Amount Profile Correction offers more precise control over the paper feeding. Paper feed errors are measured at various points and a correction value is calculated for each of the points. This enables to ensure print quality in the target print mode.

Correction values of the BRS and the PFP are automatically calculated when a pattern printed by the printer is scanned by a specified scanner. The created correction values are stored into the serial flash ROM on the main board, and applied when printing in the target print mode.
A D J U S T M E N T R E Q U IR E D

For information on how to carry out the BRS and PFP, See Chapter 5 Adjustment.

3.1 Overview
This chapter provides how to troubleshoot problems analyzing the cause based on the messages shown by the printer driver, printer’s LED status and the observed symptom. Identify and troubleshoot the problem referring to the tables on the following pages. When some parts need to be replaced, make sure to follow the procedure given in Chapter 4 and carry out required adjustments. If any abnormality is observed in motors or sensors, check the electrical value referring to the 3.1.1 “Troubleshooting on Motors and Sensors”(p.28).

3.1.1 Troubleshooting on Motors and Sensors
The following tables show the normal electric values of each motor and sensor. When any abnormality is observed in motors and sensors, check their electric values and compare them with the values given in the tables to see if the motors or sensors are broken or not. Table 3-1. Motor Resistance & Measuring Points
Motor CR Motor PF Motor Motor Connector
CN14 CN13

Status
No paper Paper exists Within PG position Out of PG position CDR mode (Stacker is at the upper position) ASF mode (Stacker is at the lower position) CD-R Tray inserted No CD-R Tray Printer Cover opened Printer Cover closed

Open: 2.4V or more Close: 0.4V or less Open: 2.4V or more Close: 0.4V or less

Cover OPEN Sensor

CN17 Between Pin 1 and 2

Note : See 2.1.2 “Motors & Sensors”(p.23) for locations of the motors and sensors.

Chapter 3 Troubleshooting

3.1 Overview

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Revision B
 Message box on the window of “EPSON Status Monitor 3”

3.2 Warning / Error Indications
This section describes how the printer indicates an error/warning status with LEDs, or on the screen of the printer driver when a problem arises during various operations; power-on sequence, paper feeding, ink drawing, printing, and so on.

Error Message

3.2.1 Error Indication Method
The Stylus Photo R280/R285/R290 are equipped with LEDs. You can check most of the troubles with the status of the LEDs or messages shown on the windows of “EPSON Status Monitor 3”. (See 1.5.3 “Operation Buttons & LEDs Functions”(p.18))  LEDs Status
LED Status
-Light Flash Flash 2 Flashes at high speed Flashes Alternatively 1 Flashes Alternatively 2 No change Lights up normally Flashes at intervals of 1.25 seconds. Flashes as follows; ON (0.5 sec.) - OFF (0.5 sec.) - ON (0.5 sec.) - OFF (1.0 sec.) Flashes at intervals of 0.5 seconds. Same as Flash

Check all connections and make sure all devices are on. If the The printer cannot communicate with the PC power was turned off during printing, cancel the print job. If properly. the error does not clear, see your printer documentation. A mechanical error has occurred.

Fatal error Maintenance request error

Off

Flashes at high speed

Delete all print jobs and turn the printer off. Remove any Flashes at foreign objects from inside the printer. After a few minutes, high speed turn the printer back on.

Table 3-5 (p.32)

Off

Flashes Flashes Parts inside your printer are at the end of their service life. See Waste ink pads need to be replaced. alternately 2 alternately 1 your printer documentation. Flashes at high speed For sheets of paper, manually set the front tray in the lower • The CD-R guide (stacker) position does not paper position. For a CD or DVD, manually set the front tray match with the print job. in the upper CD/DVD position. • The CD-R guide (stacker) is in the CD-R printing position at power-ON. For sheets of paper, turn off the printer and then remove any jammed paper by hand. For a CD or DVD, remove the CDR tray. Next, press the Paper button on the printer or click the Eject button if it appears on this screen.

-

CDR Guide error

-

Flash 2

Table 3-11 (p.41)

Paper (CDR) jam

-

-

Flash

A paper jam has occurred.

Table 3-8 (p.36)

No paper

-

-

Light

Reload the paper and manually set the front tray in the lower paper position. Then press the Paper button on the printer or Failed to feed paper. click the Continue button if it appears on the screen. To cancel all print jobs, click the Cancel button. A page has not been printed, multiple pages have been fed into the printer at once, or the wrong paper size has been fed Multiple sheets of paper were fed at the same into the printer. Remove and reload the paper. Press the Paper time. button if necessary. Reload the tray, then press the Paper button on the printer. A CD-R tray was not detected.

Table 3-9 (p.38)

Table 3-8 (p.36)

Multi-feed

-

-

Light

CDR Tray error Ink-out No ink cartridge Wrong ink cartridge

-

Light Light Light

Light -

Table 3-10 (p.40)

The cartridge has run out of ink. Black: XXXX* Color: XXXX* ................... Ink cartridge(s) was not detected. Epson recommends the genuine Epson cartridges listed above. Click the How to button for ink cartridge replacement instructions. Close the printer cover.

Table 3-7 (p.35)

Cover open error Note *:

-

Flash 2

Flash 2

The Cover Open Sensor detects the Printer Cover Table 3-6 (p.34) is open.

The “XXXX” represents the part number of the Ink Cartridge.

Chapter 3 Troubleshooting

3.2 Warning / Error Indications

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Revision B

3.3 Troubleshooting by Error Message
The following tables provide troubleshooting procedure for each error indicated by the LEDs or STM3 screen. When some parts need to be replaced or repaired, make sure to follow the procedure given in Chapter 4 and carry out required adjustments.

1. Is the Panel FFC not connected to the Panel Board 1. Connect the FFC correctly. and CN5 on the Main Board? 2. Is the Panel FFC damaged? 3. Is the Panel Board damaged? 2. Replace the Panel FFC. 3. Replace the Panel Board.

4.3.2 “Panel Assy/ Cover Open Sensor”(p.64)

1. Is the P/S ASSY connector cable not connected to 1. Connect the cable correctly. CN3 on the Main Board? P/S ASSY At power-on The printer does not work at all. USB cable Printer driver 2. Is the P/S ASSY cable or the P/S ASSY itself damaged? 2. Replace the P/S ASSY. * If this does not solve the problem, replace the Main Board Assy. 4.3.3 “P/S Assy”(p.68)

1. Is the USB cable not connected to the printer and 1. Connect the USB cable correctly. the PC? 1. The printer driver installed on the PC is not the one for the Stylus Photo R280/R285/R290? 1. The model name written into EEPROM on the Main Board is wrong? 1. Install the correct printer driver. 1. Write the correct model name to the EEPROM using the Adjustment Program.

1. Is the CR motor cable not connected to CN14 on 1. Connect the cable correctly. the Main Board? 2. Is there a malfunction of the CR motor? 2. Replace the CR motor. 1. Clean off any dirt on the frame and apply adequate grease on it.

Main Frame

1. Is their any dirt on the Main Frame? Or is the frame not adequately lubricated?

1. Is their any dirt on the CR Guide Shaft? Or is the 1. Clean off any dirt on the shaft and apply adequate grease on it. shaft not adequately lubricated? 2. Is the PG cam chipped or broken? 2. Replace the CR Guide Shaft.

CR Guide Shaft • CR motor does not rotate at all. • CR Unit hits against the right side of the Main Frame.

PG Cam

At power-on

4.4.13 “CR Unit”(p.86)
CR Shaft

CR Encoder Head FFC

1. Is the Head FFC not connected to the CR encoder connector? 2. Is the CR encoder chipped or broken? 1. Is the Head FFC broken? 1. Is the CR Scale not moving freely, centered between the sides of CR encoder sensor?

• The CR Unit hits against the Change Lever which has come down toward the front of the printer. • The error appears after the PF roller makes quick one-turn.

Compression Spring2.36

Change Lever

PF Motor

1. Is the PF motor cable not connected to CN13 on the Main Board? 2. Is there a malfunction of the PF motor? 1. Is the PF encoder FFC not connected to the PF encoder connector and the Main Board?

1. Connect the cable to the Main Board. 2. Replace the PF motor. 1. Connect the FFC to the PF encoder and the Main Board. 2. Replace the PF encoder. 1. Install the PF Scale or PF encoder correctly. 2. Clean off any dirt on the PF Scale. If the scale gets heavily soiled, replace the scale. 3. Replace the PF Scale.

2. Is the PF encoder chipped or broken? 1. Is the PF Scale not moving freely, centered between the sides of PF encoder sensor?

PF Scale

2. Is their any dirt on the PF Scale? 3. Is the PF Scale chipped or broken?

1. Is the Upper Paper Guide detached from the Main 1. Attach the Upper Paper Guide correctly. The CR Unit hits Frame? against the Upper Paper Upper Paper Guide Guide detached from the Main Frame.

4.4.15 “Upper Paper Guide”(p.90)

Chapter 3 Troubleshooting

3.3 Troubleshooting by Error Message

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EPSON Stylus Photo R280/R285/R290 Table 3-5. Troubleshooting for Fatal Error
Occurrence Timing Symptom Failed Part Check Point 1. Is the APG Unit installed incorrectly? 2. Is the Combination Gear 10,15.2 disengaged or attached incorrectly? The error occurs when the PG (gap between the printhead surface and the platen) is changed with the APG Unit. Remedy 1. Install the APG Unit carefully so as not to shift the phase. 2. Attach the gear correctly.

Revision B

Reference

At power-on During changing the platen gap

APG Unit
CR Motor

4.4.4 “APG Unit”(p.75)

Combination Gear

APG Sensor Assy Printhead Any time Other than above symptoms Main Board

1. Is the APG sensor damaged? 1. Is the Printhead damaged? 1. Is the Main Board damaged?

Table 3-6. Troubleshooting for Cover Open Error
Occurrence Timing Symptom The Printer Cover is closed, but the Cover Open error occurs. Failed Part Check Point Remedy Reference

At power-on

1. Is the Cover Open Sensor cable not connected to 1. Connect the cable to the connector on the Main CN17 on the Main Board? Board. 4.3.2 “Panel Assy/ Cover Cover Open Sensor 2. Is the Cover Open Sensor cable damaged? 2. Replace the Cover Open Sensor cable. Open Sensor”(p.64) 3. Is the Cover Open Sensor damaged? 3. Replace the Cover Open Sensor.

Paper cannot go through between the EJ Roller and the Star Wheel Roller.

EJ Frame ASSY*
Star Wheel Holder

4.4.9 “EJ Frame Assy”(p.80)

2. Is the EJ Frame Assy installed incorrectly? 3. Has the EJ Frame Assy become deformed obstructing the paper path? The leading edge of paper does not reach the PF Roller. Upper Paper Guide* 1. Is the Upper Paper Guide disengaged from the Main Frame?

Note : * Be careful not to let jammed paper rub against the nozzle surface of the Printhead, or it may damage the Printhead.

Chapter 3 Troubleshooting

3.3 Troubleshooting by Error Message

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Table 3-9. Troubleshooting for No Paper Error
Occurrence Timing Symptom The LD Roller rotates normally to feed paper, but the Hopper does not move. The LD Roller rotates normally, but paper is not fed into the printer. Failed Part Check Point 1. Is the Hopper not moving properly during the feeding operation? 1. Is there any paper dust on the LD Roller? ASF Unit 1. Is the Extension Spring 0.143 of the clutch mechanism detached? Remedy 1. Attach the Compression Spring 2.51 correctly to the ASF Frame and the Hopper. 1. Remove the paper dust on the LD Roller with a cloth moistened with alcohol. * If this does not solve the problem, replace the ASF Unit. 1. Attach the Extension Spring 0.143 correctly. Reference

ASF Unit

Any time

LD Roller Extension Spring

4.4.14 “ASF Unit”(p.88)
ASF

The PF Motor drive force is not transmitted to the LD Roller shaft.

ASF Unit 2. Is the protrusion of the clutch chipped or broken? 2. Replace the ASF Unit.
LD Roller

The LD Roller shaft is not set in the ASF home position, and paper is always fed from the ASF Assy.

ASF Unit

Edge of Change Lever

Chapter 3 Troubleshooting

3.3 Troubleshooting by Error Message

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Table 3-10. Troubleshooting for CD-R Tray Error
Occurrence Timing Symptom Failed Part Check Point 1. Has the part of the CDR Tray that contacts with the CDR Tray Sensor become cracked?
Contact point CDR Tray

Remedy 1. Replace the CDR Tray.

Reference

CDR Tray The CDR Tray is set to the printer, but the error occurs. 1. Is the CDR Sensor cable not connected to CN4 on 1. Connect the cable to the connector on the Main Board? the Main Board. When printing on CDs/DVDs CDR Tray Sensor 2. Is the CDR Tray Sensor damaged? 2. Replace the CDR Tray Sensor.

-

4.4.18 “CDR Tray Sensor”(p.94) / 4.3.1 “Main Board Unit”(p.61)

1. Is there any paper dust or foreign matter on the white mark on the CDR Tray?
White Mark

1. Remove any dust or foreign matter from the tray.

The CDR Tray center detection sequence is interrupted, and the tray is ejected.

2. Is the PW Sensor cable not connected to the CR Encoder Board and the PW Sensor? 3. Is the PW Sensor cable broken? 4. Is the PW Sensor damaged? Main Board 1. Is there any chipped or broken elements on the Main Board?

CDR Sensor When printing on CDs/DVDs The CDR Guide is set correctly, but the error occurs.

Main Board

1. Is there any chipped or broken elements on the Main Board?

1. Replace the Main Board.

Chapter 3 Troubleshooting

3.3 Troubleshooting by Error Message

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Revision B

3.4 Troubleshooting by Symptom
3.4.1 Problems in Printing Operation
This section provides how to troubleshoot the possible problems on the printer mechanism. No error message appears for most of the troubles described here. In the following tables, find the symptom you face and follow the troubleshooting procedure given in the table.  Paper Feeding Problems
Symptom Possible Cause

Table 3-12. Troubleshooting Paper Feeding Problems
Check Point Remedy Is there any “micro pearl” paper dust or oil stain on the Use a cleaning sheet in order to clean the rollers. LD Roller? 1. Set a cleaning sheet in the ASF turning the sheet upside down. 2. Press the button on the operation panel to load the sheet. 3. Repeat the above procedure several times.

The LD Roller is contaminated or worn-out

In order to remove a severe smear, staple a cloth moistened with alcohol to a post card and carry out the following operations. 1. Set the post card in the ASF with the attached cloth facing the LD Roller or Retard Roller. 2. Then, holding the top edge, press the button on the operation panel to load the card. 3. Repeat Step 2. The paper dust or oil stain on the LD Roller or the Retard Roller surface is removed. If this does not solve the problem, replace the LD or Retard Roller.

The Pickup Roller and Is there any “micro pearl” paper dust or oil stain on the Wipe the roller surface with a cloth moistened with alcohol. Idle Roller are Pickup and Idle Rollers? contaminated or worn-out Paper is not fed into the printer. Malfunction of the Paper Feed Mechanism Is there a malfunction of the Paper Feeding Mechanism?
 Correct the phases of the Paper Feed Mechanism.  Remove any dust or foreign matter in the Paper Feed Mechanism.

Is the PE Sensor connector disconnected from the Main Connect the PE Sensor cable to CN6 on the Main Board and the PE Sensor correctly. Board or the sensor? Is the Torsion Spring 0.22 detached or attached incorrectly?
PE Sensor Lever

Multiple sheets A malfunction of the are fed at a time. Retard Roller
Extension Spring

ASF

Is the Retard Roller detached?

Install the Retard Roller correctly.

 Problems with ejecting paper

Table 3-13. Troubleshooting Paper Ejecting Problems
Symptom Paper jam occurs during ejecting paper. Possible Cause A malfunction of paper feeding mechanism A malfunction of EJ Roller Check Point Is the PF Roller not moving correctly without its drive force transmitted to the EJ Roller? Is the EJ Roller moving correctly? Remedy Engage the gears in the paper feed mechanism correctly. Engage the gears which transmit drive force to the EJ Roller.

 Problems with carriage (CR Unit) movements

Table 3-14. Troubleshooting Carriage Movement Problems
Symptom Possible Cause Check Point Is there any obstruction on the carriage path? Movements of the CR Unit during printing is abnormal. Something interferes with the operation of the CR Unit. Move the CR Unit with your hand. The unit does not move smoothly? Is the slack of the Head FFC not enough or too much interfering the carriage movement? Check that by moving the carriage from side to side with your hand. Remove the obstruction. Clean the CR shaft and apply grease. Route the Head FFC around the Main Frame correctly. Remedy

Table 3-15. Troubleshooting Initialization Stop Problems
Symptom Possible Cause Improper installation of the EJ Frame A malfunction of the CR Motor A malfunction of the PF Motor Check Point Are the tabs of the EJ Frame disengaged? Is the CR Motor cable/connector disconnected? Is the PF Motor cable/connector disconnected? Is the CR Linear Scale not moving freely, centered between the sides of CR encoder sensor? CR linear Scale failure Is there any dirt on the CR Linear Scale? Is the CR Linear Scale chipped or broken? Is the Encoder FFC disconnected from the CR Encoder Board? An error occurs during initialization after poweron A malfunction of the CR Encoder Is there any paper dust or dirt on the CR Encoder? Is the Encoder FFC damaged or broken? Is the CR Encoder damaged or broken? Is the PF Scale not moving freely, centered between the sides of PF encoder sensor? PF Scale failure Is there any dirt on the PF Scale? Is the PF Scale chipped or broken? Is the Encoder FFC disconnected from the PF Encoder Board? A malfunction of the PF Encoder Is there any paper dust or dirt on the PF Encoder? Is the Encoder FFC broken? Is the PF Encoder damaged or broken? Is the Head FFC disconnected? Head FFC failure Is the Head FFC damaged or broken? Printhead failure Are the all nozzles not firing ink properly? Remedy Reinstall the EJ Frame correctly. Connect the CR Motor cable to CN14 on the Main Board. Connect the CR Motor cable to CN13 on the Main Board. Install the scale correctly. Clean off any dirt on the scale.3 Replace the CR Linear Scale. Connect the FFC to the board properly. Remove any paper dust or dirt on the CR Encoder. Replace the Head FFC. Replace the CR Unit. Install the scale correctly. Clean off any dirt on the scale. Replace the PF Scale. Connect the FFC to the board properly. Remove any paper dust or dirt on the PF Encoder. Replace the Encoder FFC. Replace the PF Encoder. Connect the FFC to CN10, CN11, CN12, CN15, and CN16 on the Main Board. Replace the Head FFC. Replace the Printhead.

Chapter 3 Troubleshooting

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EPSON Stylus Photo R280/R285/R290
 Print quality problems

Revision B

Table 3-16. Troubleshooting Print Quality Problems
Symptom Possible Cause Dirt on the Printhead. Printed image has missing colors, and the missed colors are always same. The absorber of the Cap Unit contacts with the Printhead surface during printing. Head FFC failure A malfunction of the Printhead Dirt on the Printhead. Missing dots appear sometimes. Ink cartridge failure Poor connection of the Head FFC A malfunction of the Printhead White streak / abnormal discharge Vertical lines are misaligned. Poor connection of the Head FFC A malfunction of the Printhead Improper Bi-D adjustment Check Point Run a cleaning cycle and make a test print. Repeat the operation several times. Does the problem still appear? Is the absorber of the Cap Unit deformed or damaged? Remedy Clean the Printhead surface with a cotton swab. Replace the Ink System.

Is the Head FFC damaged or broken? Run a cleaning cycle and print a nozzle check pattern. Repeat the operation several times. Does the problem still appear? Run a cleaning cycle and print a nozzle check pattern. Repeat the operation several times. Does the problem still appear? Replace the ink cartridge with a new one, and print a nozzle check pattern. The printed pattern has no missing dots?

Replace the Head FFC. Replace the Printhead. Clean the Printhead surface with a cotton swab. The cartridge is defective. Use the new cartridge.

Check the FFC with a tester. Does the result show poor connection Replace the Head FFC. of the FFC? Run a cleaning cycle and print a nozzle check pattern. Repeat the operation several times. Does the problem still appear? Is the Head FFC not securely connected to the Printhead? Using the Adjustment Program, check the Bi-D setting. Is the setting made properly? Replace the Printhead.

Is the Head FFC not securely connected to the CR Unit and boards? Connect the FFC correctly. Connect the FFC correctly. If there is no problem with the connection status, replace the Printhead. Carry out the Bi-D adjustment properly.

Chapter 3 Troubleshooting

3.4 Troubleshooting by Symptom

45

EPSON Stylus Photo R280/R285/R290 Table 3-16. Troubleshooting Print Quality Problems
Symptom Possible Cause Dirt on the CR shaft PF Roller failure Is the PF Roller damaged? Ink cartridge failure A malfunction of Carriage movements Printed image has white banding. Improper platen gap Some gear(s) is (are) damaged. Dirt on the Printhead is preventing nozzles from firing ink straight toward the paper. A malfunction of the Printhead CR shaft failure Replace the ink cartridge with a new one, and print a nozzle check pattern. The printed pattern has no missing dots? Are the carriage shaft and the Main Frame properly lubricated? Check Point Is there any dirt on the CR shaft? Is there any dirt on the PF Roller? Remedy

Revision B

Clean off any dirt on the CR shaft surface with a dry soft cloth. Clean the PF Roller surface with a soft brush carefully so as not scratch it. Replace the PF Roller. The cartridge is defective. Use the new cartridge. Apply G-71 grease referring to “Lubrication of CR Unit”(p.116).

Is the platen gap (gap between the Printhead surface and the platen) Adjust the platen gap properly. not properly set? Is (are) the gear(s) in the paper feed and ASF mechanisms damaged? Run a cleaning cycle and make a test print. Repeat the operation several times. Does the problem still appear? Is there any dust or foreign matter on the Cleaner Blade? Run a cleaning cycle and make a test print. Repeat the operation several times. Does the problem still appear? Is the CR shaft not properly installed? Is the CR shaft surface damaged? Replace the damaged gear(s). Clean the Printhead surface with a cotton swab. Remove any dust or foreign matter on the Cleaner Blade, or replace the blade. Replace the Printhead. Reinstall the CR shaft properly. Replace the CR shaft.

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EPSON Stylus Photo R280/R285/R290

Revision B

3.4.2 Power Problems
The printer does not work at all after power-on. LEDs do not light up.

Table 3-17. Troubleshooting Power Problems
Possible Cause Power code failure Improper power supply Poor connection of the PS Assy connector The fuse burned out Abnormal voltage output of the PS Board Check Point Replace the power code with a new one. Does the printer work normally? Do the power supplied from the AC line match with the electrical requirements of the printer? Is the PS Assy connector not properly connected to the Main Board? Is the fuse (F1) on the PS Board burned out? Check the voltage output from the PS Board. Is it abnormal? Remedy The power code is defective. Use the new one. Use an AC line that matches the printer electrical requirements. Connect the connector properly. Replace the PS Board. When the voltage is normal: Replace the Main Board. When the voltage is abnormal: Replace the PS Assy.

Table 3-18. Troubleshooting Ink Supply Problems
Symptom An Ink Out error occurs. A No Cartridge error occurs. An ink cartridge error occurs. Possible Cause The cartridge is empty. The printer cannot detect the ink cartridge. Is the ink cartridge empty? Are ink cartridges not installed in the IC Holder? Are the ink cartridges not properly installed? Are the top and bottom tabs of the ink cartridge broken? Ink cartridge is damaged. Is the CSIC Board not properly attached? Is there any chipped or broken elements on the CSIC Board? Check Point Remedy Replace the cartridge with a new one. Install ink cartridges. Set the cartridges properly. Replace the cartridge with a new one. Replace the cartridge with a new one. Replace the cartridge with a new one.

Table 3-19. Troubleshooting Printing Problems
Symptom Possible Cause Ink cartridge failure Poor connection of the Head FFC The carriage moves normally, but the printed image is abnormal. Cleaner Blade failure Poor connection of the Head FFC A malfunction of the Printhead Ink leakage, clogging Check Point Replace the ink cartridge with a new one, and make a test print. The printed pattern has no missing dots? Is the FFC not properly connected to the CSIC Board and the Main Board? Is there any dust or foreign matter on the Cleaner Blade? Check the FFC using a tester. Is there any abnormality in the result? Run a cleaning cycle and make a test print. Repeat the operation several times. Does the problem still appear? Is there any ink leakage found in the Printhead? Remedy The cartridge is defective. Use the new one. Connect the FFC correctly. Remove the dust or foreign matter on the Cleaner Blade, or replace the blade. Replace the Head FFC. Replace the Printhead. Reinstall the ink cartridge correctly. If this does not solve the problem, replace the ink cartridge, or the Printhead.

 Waste ink is not properly drained out of the Printhead or the Cap Unit.

Table 3-20. Troubleshooting Waste Ink Problems
Symptom Possible Cause The pump tube failure Cap failure Waste ink is not properly drained out of the Printhead or the Cap Unit, and not properly transported to the Waste Ink Tube. Disconnection of the tube A malfunction of cap movement The tube between the Waste Ink Tray and the Ink System Assy is at fault. Check Point Is there any collapsed sections of the tube? Is there any foreign matter on the cap, or is the cap damaged? Is the tube disconnected from the Cap Unit? Is the Compression Spring of the Cap Assy detached, broken, or missing? Is the tube not properly inserted in the Waste Ink Tray Assy, or not properly routed under the tray? Replace the Ink System. Remove the foreign matter on the cap with a cotton swab. Replace the cap in case that the cap is damaged. Connect the tube correctly. Replace the Ink System. Securely connect the tube to the Waste Ink Tray Assy routing the tube correctly. Remedy

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EPSON Stylus Photo R280/R285/R290

Revision B

3.4.4 Problems with Interfaces
This section provides how to troubleshoot problems on the USB interface and memory card slot.  USB interface error

Table 3-21. Troubleshooting USB Connection Errors
Possible Cause The printer driver has not been installed correctly. USB cable failure Poor connection of the USB terminals Main Board failure Check Point On the Windows PC, go to My Computer, Properties, Hardware, Device Manager. Is the printer driver associated with Other Devices? Remedy Uninstall the driver and reinstall it correctly following the instruction described in the User’s Guide.

Replace the USB cable with a new one. Does the USB communication between the The USB cable is defective. Use the new one. printer and PC return to normal? Is there any foreign matter on the USB terminal? Is the Main Board damaged or broken? Remove the foreign matter. Replace the Main Board.

Chapter 3 Troubleshooting

3.4 Troubleshooting by Symptom

49

CHAPTER

4
DISASSEMBLY/ASSEMBLY

EPSON Stylus Photo R280/R285/R290

Revision B
W A R N IN G

4.1 Overview
This chapter describes procedures for disassembling the main components of the Stylus Photo R280/R285/R290. Unless otherwise specified, disassembled units or components can be reassembled by reversing the disassembly procedure. Procedures which, if not strictly observed, could result in personal injury are described under the heading “WARNING”. “CAUTION” signals a precaution which, if ignored, could result in damage to equipment. Important tips for procedures are described under the heading “CHECK POINT”. If the assembly procedure is different from the reversed disassembly procedure, the correct procedure is described under the heading “REASSEMBLY”. Any adjustments required after reassembly of components or parts are described under the heading “ADJUSTMENT REQUIRED”. When you have to remove any components or parts that are not described in this chapter, refer to the exploded diagrams in the appendix. The precautions in the two lists below (WARNING and CAUTION), must always be followed during disassembly and assembly.

  

 





Disconnect the power cable before disassembling or assembling the printer. If you need to work on the printer with power applied, strictly follow the instructions in this manual. Wear protective goggles to protect your eyes from ink. If ink gets in your eye, flush the eye with fresh water and see a doctor immediately. Always wear gloves for disassembly and reassembly to avoid injury from sharp metal edges. Use static discharge equipment such as anti-static wrist straps when accessing internal components to protect sensitive electronic components and circuitry. Never touch the ink or wasted ink with bare hands. If ink comes into contact with your skin, wash it off with soap and water immediately. If irritation occurs, contact a physician. Make sure the tip of the waste ink tube is located at correct position when reassembling the waste ink tube, or it will cause ink leakage.

C A U T IO N

 

4.1.1 Precautions
See the precautions given under the heading “WARNING” and “CAUTION” in the following column when disassembling Stylus photo R280/R285/R290.

  





When transporting, do not remove the ink cartridges. Pack the printer with the cartridges installed. Use only recommended tools for disassembly, assembly or adjustment of the printer. (Refer to "Table 4-1. List of Tools" (p.52)) Be sure to tighten the screws to the specified torque. Apply lubricants and adhesives as specified. (See Chapter 6 Specified Lubricant (p.114) for details.) Make the specified adjustments when you disassemble the printer. (Chapter 5 contains additional information on adjustments. When using compressed air products, such as air duster, for cleaning during repair and maintenance, the use of such products containing flammable gas is prohibited. Be careful not to scratch or damage the coating on exterior surface of the product during disassembly and reassembly.

Note : All of the tools listed above are commercially available. EPSON provides the tools listed with EPSON tool code.

4.1.3 Screws
The screws used in the printer are as shown in the table below. Make sure you always use the correct type and number of screws. The numbers shown in the “No.” column appear throughout this chapter to indicate the screw type more clearly. Table 4-2. List of Screw Types
No. 1 Description C.B.S. 3x6 Image

4.1.4 Making a Special Tool for CSIC Board
The CSIC board (refer to p.73) can be easily removed by using a special tool. The method for making the tool is described below. 1. Prepare a handle part of a clip, or a similar metal wire piece.
Handle part

4.1.5 Work Completion Checklist
Whenever the printer is serviced, use the checklist shown below to confirm all work is completed properly and the printer is ready to be returned to the user. Make sure to always check the maintenance counter before disassembling the printer. If the counter shows that some part or component has almost reached the end of its service life, replace the part after receiving prior approval from the user. Table 4-4. Work Completion Checklist
Classification Printer Unit Item Self-test On-line Test Printhead (print a nozzle check pattern) Carriage Mechanism Check Point Is the operation normal? Is the printing attempt successful? Is ink discharged normally from all the nozzles? Does the carriage move smoothly? Is there any abnormal noise during its operation? Is paper advanced smoothly? No paper jamming? No paper skew? No multiple-sheet feeding? No abnormal noise? Status OK / NG OK / NG OK / NG OK / NG OK / NG OK / NG OK / NG OK / NG OK / NG OK / NG OK / NG OK / NG OK / NG OK / NG OK / NG OK / NG

Is the paper path free of obstructions? On-line Test Adjustment Lubrication On-line Test Specified Adjustments Specified Lubrication Is the operation normal? Are all the adjustments correctly completed? Has lubrication been applied at the specified points? Is the amount of lubrication correct? Function Firmware Version Version:

Figure 4-2. Making Special Tool for CSIC Board (2)

Chapter 4 Disassembly/Assembly

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53

EPSON Stylus Photo R280/R285/R290
Table 4-4. Work Completion Checklist
Classification Packing Item Ink Cartridge Waste Ink Pads Carriage position Check Point Are the ink cartridges installed correctly? Is the remaining capacity of the waste ink pads enough? Is the carriage located at the position where the Printhead is covered with the cap? Have the specified parts been secured with the strong tapes to prevent damage during transportation? See “ Protection for transportation” Status OK / NG OK / NG

Revision B

PROTECTION FOR TRANSPORTATION Before packing the printer to be returned to the user, attach several pieces of strong tape and vinyl sheet to the specified points to prevent damaging the printer during transportation.  Securing the Carriage (tape: 180mm x 1 pc., fold one end by 5mm) 1. Attach 40mm-length portion of the tape (not folded side) to the left side of the carriage aligning the tape’s corner with the carriage’s ribs as shown below. 2. Attach the folded side of the tape to the housing with the carriage locked at its lock position. (First move the carriage to the lock position, then attach the tape to the housing.)
Step1

OK / NG

Protection (strong tape, vinyl sheet)

OK / NG

(p.54)
Others Attachments, Accessories Have all the relevant items been included in/returned to the package?
40mm

OK / NG
Step2

Folded end

Figure 4-3. Securing the Carriage

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EPSON Stylus Photo R280/R285/R290
 Securing the Paper Support Assy (tape: 80mm x 3 pcs., fold one end by 5mm) Prepare a commercially available 280cm-width x 80cm-length vinyl sheet to avoid scratches on the exterior parts, and secure the sheet with strong tape. Attach the strong tapes on both sides of the Paper Support Assy as shown in the figure below. 1. Fold the vinyl sheet in half and insert the folded sheet between the Paper Support Assy and the Printer Cover with the folded side facing the front side of the printer, and secure the sheet with the strong tape as shown below. Attach the left and right tapes to the Paper Support Assy and the side of the housing.
35mm 35mm

Revision B
 Securing the Stacker Cover (tape: 60mm x 1 pc., fold one end by 5mm) Have a commercially available 280mm-width x 80mm-length vinyl sheet to cover the exterior parts, and secure the sheet with strong tape. • Fold the vinyl sheet in half, and insert the folded sheet between the Stacker Assy and the Stacker Cover with the fold facing front side of the printer. Align the left and right edges of the sheet with the edges of the Stacker Cover and secure the sheet with the strong tape as shown below.
Align the edges with the sides of Stacker Assy

2.

40mm 40mm When the Stacker Cover is closed Vinyl Sheet (W280xH80) Folded end Align the edges with the sides of Paper Support Assy

Vinyl Sheet (W280xH80)

Folded end

Figure 4-6. Securing the Stacker Cover

Figure 4-4. Securing the Paper Support Assy  Securing the Stacker Assy (tape: 60mm x 1 pc., fold one end by 5mm) Attach the strong tape to the center of the Stacker Assy as shown below. The edge and backside of the Stacker have irregular steps. Make sure to attach the tape along the shape.

30mm

Folded end

Figure 4-5. Securing the Stacker Assy

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EPSON Stylus Photo R280/R285/R290

Revision B

4.1.6 Required Preparation before Disassembly
Make sure to carry out the following operations before disassembling the printer.  When the Main Board needs to be replaced, make a backup copy of EEPROM data.  Unlock the carriage lock and move the CR Unit to other than its home position.
x “4.1.8 How to Unlock the Carriage”

4.1.8 How to Unlock the Carriage
 Unlocking the carriage is required for disassembly of some parts or components. Carry out any of the following operations to unlock the carriage and move the carriage to other than its home position.
C A U T IO N

Be extremely careful not to damage the EJ Roller gear. Extra care must be taken to avoid injury from sharp metal edges.

4.1.7 Orientation Definition
Orientation descriptions used in the disassembly/reassembly procedures are as follows.
[Rear Side]

 

Power the printer and turn it off forcedly by disconnecting the power cable when the CR Unit is unlocked and moved away from the home position. Turn the EJ Roller gear on the left side of the printer in the direction of the arrow until the carriage is unlocked.

4.2 Removing Exterior Parts/Components
4.2.1 Printer Cover
 Parts/Components need to be removed in advance: Nothing  Removal procedure 1. Pull out the left shaft and right shaft of the Printer Cover, and remove the Printer Cover.
Printer Cover

4.2.2 Paper Support Assy
 Parts/Components need to be removed in advance: Nothing  Removal procedure 1. 2. Open the Paper Support Assy. Disengage the right shaft of the Paper Support Assy from the bushing of the ASF Unit by pushing the bushing outward. Then remove the Paper Support Assy, disengaging the left shaft preventing the Edge Guide projection from hitting against the other parts.
Edge Guide Projection

Paper Support Assy

Shaft (left)

Shaft (right) Push

Bushing of the ASF

:Shaft

Figure 4-10. Removing the Paper Support Assy When reinstalling the Paper Support Assy, match the projection and hole of the Edge Guide, then attach the right shaft and the left shaft in that order. (Put the shafts at the front side in the bushing and then push them rearward.) After reinstalling, check that the Paper Support Assy moves smoothly. Figure 4-9. Removing the Printer Cover
Paper Support Assy

Remove the four screws and remove the Upper Housing upward. : C.B.P. M3x10 (tightening torque: 5-7 kgf.cm) (No.4)
(The numbers shown in the figure indicate the order of tightening the screws.)
[Rear Side]

4
Shaft Shaft

3

Stacker Assy

Stacker Cover

Figure 4-12. Removing the Stacker Assy / Stacker Cover When installing the Stacker Assy, insert the guide pins of the Stacker Assy into the lower grooves of the Guide Stacker Assy. (The upper grooves are used when CDR is printed.)
Groove Groove

EPSON Stylus Photo R280/R285/R290
2. Slide the Front Housing in the direction of the arrow and remove the Front Housing from the Upper Housing.
Grooves Front Housing [Rear Side]

Revision B

Ribs

Figure 4-15. Removing the Front Housing When installing the Upper Housing, be careful of the following:  Do not pinch the cables.  Tighten the screws in the order given in Fig.4-14 (p.59).  Match the ribs of the Upper Housing shown in Fig.4-14 (p.59) with the grooves of the Lower Housing.  As shown in Fig.4-16, match the A part of the Front Housing with the screw box of the Lower Housing.
Front Housing

Whenever the Main Board Unit is replaced, the required adjustment must be carried out. x Refer to "5.1.2 Required Adjustments" (p.99) D When installing the Main Board Unit, be careful of the following:  Match the positioning holes with guide pins shown in Fig.4-19.  Insert the rib of the Main Board Unit into the positioning hole of the Cable Holder Frame as shown in Fig.4-19.  Tighten the screws in the order given in Fig.4-19.

A D B C
Sharp edge Align the upper left end of acetate tape D with the edge of the Lower Shield Plate M/B.

Edge of Lower Shield Plate M/B

Figure 4-20. Routing the Cables

Chapter 4 Disassembly/Assembly

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EPSON Stylus Photo R280/R285/R290
 1. Disassembling the Main Board Unit Remove the Main Board Unit (p.61).   Do not apply unnecessary force on the screw receiving parts of the Lower Shield Plate M/B, as they are easy to deform. When assembling or disassembling the Upper Shield Plate M/B, be careful of its sharp edges.
C A U T IO N

Revision B

Be careful of the sharp edges shown in the figure below when assembling or reassembling.

C A U T IO N

3. 4.

Remove the two screws and remove the Shield Plate M/B Sub. x Screw (2 pcs.): C.B.S. M3x6 (tightening torque: 4-6 kgf.cm) (No.1)
(The numbers shown in the figure indicate the order of tightening the screws.)

Figure 4-22. Removing the Main Board When installing the Main Board, match the positioning hole with the guide pin shown in Fig.4-22. Tighten the screws in the order given in Fig.4-21 (p.63), Fig.4-22.

Chapter 4 Disassembly/Assembly

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Revision B
C A U T IO N

4.3.2 Panel Assy/ Cover Open Sensor
 Parts/Components need to be removed in advance Printer Cover / Paper Support Assy / Housing Upper  Removal procedure  1. 2. 3. 4. 5. Panel Assy removal Peel off the acetate tape C. Disconnect the Panel FFC from the connector (CN5) on the Main Board and peel the Panel FFC off the Cable Holder Frame. Disconnect the CDR Sensor Cable and Cover Open Sensor Cable from the connectors (CN4, CN17) on the Main Board. Release the CDR Sensor Cable and Cover Open Sensor Cable from the two hooks of the Cable Holder Frame. Peel off the acetate tape A, B to separate the CDR Sensor Cable from the Cover Open Sensor Cable.
CN4 Main Board Hooks and Acetate Tape A, B

When removing the screw (2) shown in Fig.4-24, be careful not to damage the Cover Open Sensor Cable and CDR Sensor Cable.

When Installing the Panel Assy, be careful of the following:  Tighten the screws in the order given in Fig.4-24.  When routing the FFCs and cables, follow the procedures below referring to Fig.4-25. 1. Route the Panel FFC aligning its upper edge with the reference line marked on the Cable Holder Frame, and secure the FFC with double-sided tape. 2. Attach the acetate tape C along with the edge of the Cable Holder Frame to secure the Panel FFC and Head FFC. 3. Tie the two cables together using two pieces of acetate tape (20 mm each) so that the two tape positions come to the two hooks of the Cable Holder Frame respectively. The cables orientation must be as follows; CDR cable: faces its black side upward Cover Open Sensor cable: faces its gray side upward 4. Route the cables through the two hooks of the Cable Holder Frame aligning the center of the tapes with the hooks.
Fold the Panel FFC along the corner of the Upper Shield Plate M/B.



As shown in Fig.4-26, route the CDR Sensor Cable and Cover Open Sensor Cable through the gap between the two ribs of the Open Sensor Holder.
Cover Open Sensor Cable CDR Sensor Cable

Ribs

Figure 4-26. Installing the Panel Assy (1)  As shown in Fig.4-24 (p.64) and Fig.4-27, match the positioning holes of the Open Sensor Holder with the guide pins of the Lower Housing, and secure the Open Sensor Holder with the tab.

Panel FFC

Upper Side : CDR Sensor Cable Lower Side : Cover Open Sensor Cable

A C
Do not route the Panel FFC over the screw of the Cable Holder Frame.

B
Open Sensor Holder

Hook Ref. Line Align the lower left end of the acetate tape C with the edge of the Cable Holder Frame.

When installing the Panel Unit, be careful of the following:  When installing the Panel Shield Plate to the Open Sensor Holder, match the hook and guide pins with the positioning holes shown in Fig.4-32 and insert the Panel Shield Plate into the groove of the Open Sensor Holder to secure the Panel Shield Plate.
[Upper Side]

3.

Remove the Panel Assy. (p.64) From the back of the Open Sensor Holder, disengage the hook of the Cover Open Sensor, and remove the Cover Open Sensor pulling its rib out of the hole by rotating the sensor in the direction of the arrow. Disconnect the connector from the Cover Open Sensor to remove the Cover Open Sensor.
Cover Open Sensor

Figure 4-32. Installing the Panel Unit    Attach the Panel FFC with double-sided tape along with the reference line shown in Fig.4-29 (p.66). When installing the Panel Board, match the guide pin with the positioning hole shown in Fig.4-30. Install the PS button, Ink button, and Paper button as shown in Fig.4-31.

When installing the Cover Open Sensor, insert the rib shown in Fig.4-33 into the hole of the Open Sensor Holder, and secure the Cover Open Sensor with the hook.

Do not touch the PF Scale with bare hands or damage it. If the Printer Mechanism is tilted leftward about 15°, the PF Scale hits against the desk surface and can break. After removing the Printer Mechanism, take extra care to protect the PF Scale.

er Print

C A U T IO N

 

Be careful of the four sharp edges shown in the figure below when assembling or reassembling. Printer Mechanism Handling Precaution When lifting the printer, hold parts shown in the figure below to prevent the frame from deforming.

When installing the Printer Mechanism, be careful of the following:  Secure the Ink Tube Cover with the hook after inserting the two ribs shown in Fig.4-37 (p.69).  Wipe off any ink on the joint portion of the Waste Ink Tube before reconnecting the tube. Ink on the joint portion makes the tube likely to get disconnected.  As shown in Fig.4-43, insert the Waste Ink Tube over the tube of the Waste Ink Tray until the top end of the Waste Ink Tube contacts with the rib.
Top end of Waste Ink Tube

 

When installing the Cover Case, match the two guide pins and their two positioning holes as shown in Fig.4-44. Route the CDR Guide Sensor Cable through the opening as shown in Fig.4-44.

Figure 4-43. Cautions of inserting the Waste Ink Tube    Match the positioning holes with guide pins (two pairs) shown in Fig.4-42 (p.70). Tighten the screws in the order given in Fig.4-42 (p.70). Make sure the Waste Ink Tube or cables are not pinched between the Printer Mechanism and the Lower Housing. Whenever the Printer Mechanism is replaced, the required adjustments must be carried out. x Refer to "5.1.2 Required Adjustments" (p.99)

Revision B
3. Disconnect the CSIC FFC from the connector ( ) on the CSIC Board.

4.4.2 Printhead
C A U T IO N





When removing the Head FFC Cover and the Head FFC Cover Inner, do not use tools with sharp ends as the FFC may get damaged. Be careful not to damage the FFC and cables when disengaging the hook of the CSIC Assy.

Figure 4-46. Removing the CSIC FFC 4. While disengaging the hook of the Head FFC Cover Inner with a flathead screwdriver, slide the Head FFC Cover Inner upward and remove it.
Head FFC Cover Inner Removal Direction

See the section given below on how to unlock the carriage. x “4.1.8 How to Unlock the Carriage”

1. 2.

Move the CR Unit to the center, open the Cartridge Cover and remove all Ink Cartridges. While disengaging the hook of the Head FFC Cover with a flathead screwdriver, slide the Head FFC Cover downward and remove it.
Head FFC Cover

Hook

Screwdriver

Figure 4-47. Removing the Head FFC Cover Inner

Removal Direction

Screwdriver Hook

Figure 4-45. Removing the Head FFC Cover

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EPSON Stylus Photo R280/R285/R290
5. Using the special tool (see p.53) disengage the hook A of the CSIC Assy on the left back of the Carriage Unit.
[Back Side] Hook A CSIC Assy

Revision B
C A U T IO N

Take extra care not to spill ink and contaminate the surroundings. Be extremely careful not to touch the nozzle surface, the ink supply needles and the Head Cover, otherwise the nozzles may get clogged.
Printhead Head Cover

Special Tool

Figure 4-48. Removing the CSIC Assy (1)
Nozzle surface

6. 7.

Using the special tool (see p.53) disengage the hook B of the CSIC Assy on the right back of the Carriage Unit. Slide the CSIC Assy upward and remove the CSIC Board. 8.
CSIC Assy Removal Direction Special Tool [Back Side] Hook B

See the section given below on how to unlock the carriage. x “4.1.8 How to Unlock the Carriage”

Connectors

Figure 4-52. Removing the Printhead (2)

1. 2. 3.

Tighten the screws in the order given in Fig.4-51.

4. 5.

Unlock the carriage and move the CR Unit to the center. Remove the Torsion Spring from the hook ( ) on the left side of the Main Frame. Remove the CR Scale from the hook ( ) on the right side of the Main Frame. Pull out the CR Scale from the slit of the CR Unit. Turn the CR Scale 90 degrees in the direction of the arrow, and remove the CR Scale from the hook.
Extension Spring

Lubrication is required. See the page given below for the lubrication information. Lubrication of APG Unit (p.117) Install the APG Unit following the procedure below. 1. Put a pin (thinner than Ø2mm) through the positioning holes of the Main Frame and the right PG Cam on the CR Shaft.

3.

Install the APG Unit to the Main Frame.

Positioning Hole

Pin (1) Right PG Cam

Pin

APG Unit

Figure 4-59. Reinstalling the APG Unit (3) 4. Check that the hooks ( ) are attached to the positioning holes of the Main Frame, then screw the APG Unit.
Main Frame

Figure 4-62. Removing the Waste Ink Pad Insert the Waste Ink Pads into the trays inserting the slits of the pads over the tabs on the trays. Make sure to push the pads as far as they will go (until their top surface locate lower than the top surface of the tray edges).
Hook Tab

When installing the Left Guide Stacker, insert the rib indicated with in Fig.4-65 and match the positioning holes and guide pins indicated with (two pairs). When installing the Right Guide Stacker, match the positioning holes and guide pins indicated with (two pairs) in Fig.4-65.
Left Guide Stacker Right Guide Stacker

Be careful of the seven sharp edges shown in Fig.4-64 when assembling or reassembling.

Take extra care not to spill ink and contaminate the surroundings. Also, when removing the Waste Ink Tube, be careful not to spill the ink. Extra care must be taken to avoid injury from sharp edges of the rib of the Main Frame. Be careful not to drop and damage the shaft of the Carriage Lock and the Torsion Spring, as they easily come off.
Pump Section Torsion Spring

Insert a screwdriver through the hole of the Main Frame and remove the screw (2) that secures the Pump section. x Screw : C.B.S. M3x6 (tightening torque: 7-9 kgf.cm) (No.1)
(The numbers shown in the figure indicate the order of tightening the screws.)

Hole

1
Cap section

2

Shaft of the Carriage Lock

Figure 4-68. Removing the Ink System (1) 4. Slide the Ink System to the direction of the arrow and disengage the Ink System from the guide pin of the ASF Unit.
[Rear Side]

See the section given below on how to unlock the carriage. x “4.1.8 How to Unlock the Carriage”

Guide Pin

Pump Cap

Figure 4-69. Removing the Ink System (2)

Chapter 4 Disassembly/Assembly

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EPSON Stylus Photo R280/R285/R290
5. Remove the Ink System in the following procedures. 1.Slide it to the right. 2.Rotate it in the direction of the arrow (1) and release the pump part from the Main Frame. 3.Pull it out toward you (arrow (2)).
Pump

Revision B

4.4.9 EJ Frame Assy
 Parts/Components need to be removed in advance Printer Cover / Paper Support Assy / Upper Housing / Main Board Unit / Panel Assy / Cover Open Sensor / Printer Mechanism  Removal procedure 1. 2. 3. Move the CR Unit to the home position side. Release the Head FFC from the two hooks of the Cable Holder Frame and pull out the Head FFC through the cutout. Release the Head FFC from the three hooks of the Front Frame and peel off the double-sided tape.

1

2

Figure 4-70. Removing the Ink System (2) When installing the Ink System, be careful of the following:  Lubrication is required. See the page given below for the lubrication information. Lubrication of Ink System (p.117)  Insert the shafts of the Ink System into the positioning holes ( ) of the Frame.

Cable Holder Frame [Rear Side] Front Frame

Cutout

Head FFC

Double-sided Tape

Hook Acetate Tape Position

Figure 4-72. Removing the Head FFC Figure 4-71. Reinstalling the Ink System (1)   Tighten the screws in the order given in Fig.4-68. After installing the Ink System, check the Carriage Lock for proper operation referring to the section given below. x “4.1.8 How to Unlock the Carriage” Insert the positioning hole of the Ink System shown in Fig.4-69 over the guide pin of the ASF Unit.



Chapter 4 Disassembly/Assembly

4.4.9 EJ Frame Assy (Disassembling the Printer Mechanism)

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EPSON Stylus Photo R280/R285/R290
4. 5. 6. Disconnect the PF Encoder FFC from the PF Encoder. Remove the two screws, disengage the two hooks of the Cable Holder Frame from the Front Frame and Main Frame, and remove the Cable Holder Frame. Screw : C.B.S. M3x6 (tightening torque: 7-9 kgf.cm) (No.1)
(The numbers shown in the figure indicate the order of tightening the screws.)
[Back Side] Cable Holder Frame

Revision B
8. Remove the screws on the right and left sides, and remove the Front Frame. : C.B.S. M3x6 (tightening torque: 7-9 kgf.cm) (No.1)
(The numbers shown in the figure indicate the order of tightening the screws.)

When installing the EJ Frame Assy, be careful of the following:  Lubrication is required. See the page given below for the lubrication information. Lubrication of EJ Frame Assy (p.115)  As shown in Fig.4-77, insert the two bearings of the EJ Frame Assy over the EJ Roller Shaft.
EJ Frame Assy Bearing Bearing



When installing the Front Frame, screw it after securing the foot of the two EJ Frame Springs to the slits as shown in the figure. Carefully handle the EJ Frame as the springs come off easily.
[Right Side] HP Side

[Left Side] Opposite to HP

Left EJ Frame Spring

Right EJ Frame Spring

Figure 4-79. Reinstalling the Front Frame (2) 
EJ Roller Shaft

Figure 4-77. Reinstalling the EJ Frame Assy  When installing the EJ Frame Assy, make sure that the Left/Right EJ Frame Springs are attached as shown in Fig.4-78. Carefully handle the EJ Frame Assy as the springs come off easily.
[Right Side] HP Side





[Left Side] Opposite to HP

When installing the Cable Holder Frame, match the two hooks of the Cable Holder Frame with the positioning holes of the Main Frame and Front Frame as shown in Fig.4-73 (p.81), and tighten the screws in the order given in the figure. When installing the Cable Holder Frame, attach the PF Encoder FFC along with the reference line shown in Fig.4-74 (p.81). When installing the Front Frame, match the positioning holes of the Front Frame with the guide pins of the Main Frame (two pairs), and tighten the screws in the order given in Fig.4-75 (p.81).

Shorter

Left EJ Frame Spring

Right EJ Frame Spring

Longer

A D J U S T M E N T R E Q U IR E D

Figure 4-78. Reinstalling the Front Frame (1)

Whenever the EJ Frame Assy is removed or replaced, the required adjustments must be carried out. x Refer to "5.1.2 Required Adjustments" (p.99)

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4.4.9 EJ Frame Assy (Disassembling the Printer Mechanism)

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Revision B

4.4.10 PF Encoder / PF Scale
C A U T IO N

4.4.11 PF Motor
C A U T IO N

Take extra care not to contaminate or scratch the PF Scale. Never touch the scale with bare hands.

Take extra care not to contaminate the Timing Belt with grease. The belt deteriorates faster if grease adheres to it.

Insert a Phillips screwdriver (with a shaft of 13cm or longer is recommended) through the hole of the Front Frame, remove the two screws, and remove the CR Motor. x Screw : C.P. M3x4 (tightening torque: 3-5 kgf.cm) (No.6)
(The numbers shown in the figure indicate the order of tightening the screws.)

2.

Remove the Driven Pulley Assy and remove the Timing Belt from the Pinion Gear of the CR Motor.
CR Motor

When routing the CR Motor Cable and PE Sensor Cable, refer to Fig.4-86 and follow the steps below. 1. Wrap the CR Motor Cable with the acetate tape A (30 mm) at the position of 100 mm away from the acetate tape that is on the CR Motor side. 2. Tie the two cables together with the acetate tape B (20 mm) at the position 60mm/40mm away from the acetate tape A/ PE Sensor connector. 3. Route the center of the acetate tape A behind the convex portion of the Main Frame, and secure the tied cables with the hook (1) at the center of the acetate tape B so that the CR Motor Cable faces toward you. 4. Wrap the CR Motor Cable and PE Sensor Cable with acetate tapes (20 mm) at the positions of the hooks (2) (3), then secure the center of the acetate tapes with Hooks (2) (3).
CR Motor PE Sensor





Lubrication is required. See the page given below for the lubrication information. Lubrication of Driven Pulley (p.114) When installing the CR Motor, install it so that the print side faces upwards.

Revision B
4. 5. Disengage the end of the Spring (2) from the hook, and the other end from the slit of the CR shaft, and remove the Spring (2). Remove the washer by expanding the gap between the washer and the Right PG Cam using a pair of Tweezers, and remove the Right PG Cam.
CR Shaft Spring (2) [Right Side]

Before turning the Parallelism Bushing L, mark the scale position of the Parallelism Bushing with a marker. And taking extra care not to damage the Gear with the rib, pull it toward the front.
Washer

1. 2. 3.

Remove the Cable Holder Frame and Front Frame. (p.81) Disengage the upper end of the Spring (1) from the slit, and remove the Spring (1). Loosen the screw ( ), and turn the Parallelism Bushing L clockwise to the maximum.
[Left Side] Spring (1) Slit

Removal Direction

Right PG Cam

Hook

Figure 4-89. Removing the CR unit (2)

C A U T IO N

If the Print Head has not been removed, be extremely careful not to touch the nozzle surface of the Print Head.

6.

Hold the CR Unit from the bottom and lift up the CR Shaft, release from the bushing in the (1) (2) order, and remove the CR Unit with the Shaft from the Main Frame.
CR Unit

Lubrication is required. See the page given below for the lubrication information. Lubrication of CR Unit (p.116) Before attaching the right PG cam, remove the APG Unit and install the cam matching its phase with the APG Unit. (Refer to Reinstalling the APG Unit (p.76)) When attaching the spring (2) and the washer for the Right PG Cam to the CR Shaft, make sure to attach them to the positioning slits on the CR Shaft. (See Fig.4-89 (p.86)) When installing the Timing Belt, make sure that it is not twisted and the lumpy side comes to the inner side.
Up

CR Unit

Lumpy side (Inner side) Flat side (Outer side) Lumpy on both inner/ outer side

Timing Belt

Figure 4-94. Reinstalling the Timing Belt Figure 4-92. Removing the CR Unit (5) 9. Disconnect the FFC from the CR Encoder connector, pull out the FFC from the slit of the CR Unit, and remove the Head FFC.
Head FFC CR Unit Guide Part



When installing the CR Unit, hook the Guide part to the Main Frame.
CR Unit

Whenever the CR Unit is removed or replaced, the required adjustments must be carried out. x Refer to "5.1.2 Required Adjustments" (p.99)

Chapter 4 Disassembly/Assembly

4.4.13 CR Unit (Disassembling the Printer Mechanism)

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EPSON Stylus Photo R280/R285/R290
C H E C K P O IN T

Revision B

Remove the Cartridge Cover following the steps below. The Hinge, Cover Cartridge need to be cut with a nipper or similar tool to be removed. Therefore, whenever replacing the Cartridge Cover, the Hinge, Cover Cartridge also must be replaced with a new one. 1. Cut the convex portion of the Hinge, Cover Cartridge with a nipper or similar tool. 2. Disengage the hook from the opening made by the cut and remove the Hinge, Cover Cartridge. 3. Remove the Cartridge Cover pulling out its two guide pins.
Right side view of the hinge : cut position Convex portion Cartridge Cover : Guide Pin

Revision B
Disengage the two hooks (1) (2) that secure the ASF Unit from the Main Frame. Remove the Combination Gear (10,15.2), then remove the ASF Unit while releasing the edge of the Change Lever from the hole of the Main Frame.
Hook (1) Change Lever

Lubrication is required. See the page given below for the lubrication information. Lubrication of ASF Unit (p.118) When installing the ASF Unit, make sure that the Combination Gear, tip of the Change Lever and the two hooks are securely attached. Also make sure that there is appropriate space at both the left and right of the Change Lever. Tighten the screws in the order given in Fig.4-100 (p.89). Install the LD Roller following the procedure below. Make sure to apply grease referring to the page given below. Lubrication of the ASF Unit (p.118) Install the LD Roller aligning the arrow on the LD Roller with the arrow on the blade of the shaft. Make sure the LD Roller is securely attached without gap or misalignment.
LD Roller Align the arrows ASF Unit

4.4.15 Upper Paper Guide
C A U T IO N

  

Be sure to follow the procedure below to remove the Upper Paper Guide to avoid damaging the PE Sensor Lever. It is recommended to place a transparent sheet between the Upper and Front Paper Guides to avoid scratching the roller. Do not touch the roller surface with bare hands as it can adversely affect the print quality.

Whenever the ASF Unit is removed or replaced, the required adjustments must be carried out. x Refer to "5.1.2 Required Adjustments" (p.99)

Upper Paper Guide

Tip

Press

Removal Direction

PE Sensor Lever

Figure 4-104. Removing the Upper Paper Guide

Chapter 4 Disassembly/Assembly

4.4.15 Upper Paper Guide (Disassembling the Printer Mechanism)

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EPSON Stylus Photo R280/R285/R290

Revision B

C H E C K P O IN T

The figure below is the Upper Paper Guide. The two thin shafts indicated with the arrows are likely to break, however, the Upper Paper Guide does not need to be replaced even if the shafts become broken. Because the shafts do not go on the bushings of the Printer Frame.

EPSON Stylus Photo R280/R285/R290
5. Remove the Front Paper Guide Assy, following the steps below. (1) Lift part to disengage the left side of the Front Paper Guide Assy.  (2) Slide the assy leftward little by little to disengage the right side of the assy. (3) Remove the Front Paper Guide Assy while releasing its shaft from the cutout of the rib on the left side of the Main Frame. 2 1 
Cutout Front Paper Guide Assy

Figure 4-111. Routing the CDR Tray Sensor Cable Attach the long foot of the EJ Ground Spring as follows; (1) put it through the gap under the portion contacts with the EJ Roller, (2) let it contact with the Main Frame, (3) let it contact with the PF Roller shaft, (4) put it through the hole on the frame. When finished, make sure the spring properly contacts with (1), (2), (3), and (4) points.
Contacts with PF Roller Shaft Contacts with EJ Roller shaft Contacts with Main Frame Long foot of EJ Ground Spring

Disengage the hook of the CDR Tray Sensor. Turn the CDR Tray Sensor 90 degrees in the direction of the arrow to disengage its another hook, and pull it out from the hole to remove it together with the CDR Guide Sensor.
CDR Tray Sensor

5.1 Adjustment Items and Overview
This chapter describes adjustments necessary after the disassembly/reassembly of the printer.

C H E C K P O IN T

For information on how to carry out the adjustments and media required for the adjustments, see the instructions displayed by the Adjustment Program.

5.1.1 Servicing Adjustment Item List
The adjustment items of this product are as follows.

Table 5-1. Adjustment Items
Adjustment Item Purpose Method Outline Install the Head Nozzle surface parallel to the printing surface and set Mechanical adjustment using the thickness gauges. Make a proper the gap between the paper and the Head Nozzle surface to the specified adjustment according to the result whether the manually-moved value. carriage (printhead) runs over or hits against the gauges placed on the platen. Tool • Thickness Gauge 1.15mm, 1.3mm

PG adjustment

EEPROM data copy

• Adjustment Program When the main board needs to be replaced, use this to copy adjustment Readout the EEPROM data from the main board before removing it. values stored on the old main board to the new board. If this copy is Then replace the board with a new one, and load the EEPROM data to completed successfully, all the other adjustments required after the new board. replacing the main board are no longer be necessary. This must be carried out after replacing the main board to apply settings for the target market. Select the target market. The selected market settings are automatically • Adjustment Program written to the main board.

Initial setting

Head ID input

• Adjustment Program This must be carried out after replacing the printhead in order to enter Enter the ID printed on the Head QR code label attached on the the new printhead ID (Head ID) that reduces variation between printhead. The correction values are automatically written to the main printheads. board. Sets a USB ID of the printer. A computer identifies the printer by the ID when multiple same models are connected via a USB hub. Resets the counter to maintain paper feed accuracy which decreases due to paper dust. Enter the product serial number of the printer. The ID is automatically • Adjustment Program generated and written to the main board. Reset the counter to its default. • Adjustment Program • Adjustment Program

When reading the counter value from the old main board is impossible Set the counter to its maximum value (3000). in the case of replacing the board, use this to set the counter to its maximum value. This corrects top margin of printout.

TOP margin adjustment

A top margin adjustment pattern is printed. Examine the lines printed • Adjustment Program near the top edge of the printout, and enter the value for the line that is • Ruler exactly 3 mm away from the top edge.

Head angular adjustment

This must be carried out after replacing the printhead in order to correct A head angular adjustment pattern is printed. Examine the printed lines • Adjustment Program tilt of the printhead by software. and enter the value for the most straight lines.

Chapter 5 Adjustment

5.1 Adjustment Items and Overview

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EPSON Stylus Photo R280/R285/R290 Table 5-1. Adjustment Items
Adjustment Item Bi-D adjustment First dot position adjustment Purpose Method Outline Corrects print start timing in bi-directional printing to improve the print A Bi-D adjustment pattern is printed. Examine the patterns and enter quality. the value for the pattern with no gap and overlap for each mode.

Revision B

Tool • Adjustment Program

Corrects left margin of printout. The print start position in the carriage A first dot adjustment pattern is printed. Examine the lines printed near • Adjustment Program moving direction is corrected by software. • Ruler the left edge of the printout and enter the value for the line that is exactly 5 mm away from the left edge. This adjustment is made to correct the mounting position of the PW Sensor on a software basis to adjust the detection position and Nozzle position dispersion. A PW adjustment pattern is printed. Examine the printout patterns and enter the value for the line that is exactly 5mm away from the paper edge for each of the left, right, top and bottom.

PW adjustment

PF adjustment

Corrects variations in paper feed accuracy when using the Microweave A PF adjustment pattern is printed. Examine the printout patterns and • Adjustment Program to achieve higher print quality. select the value for the best pattern. The correction value is registered. This adjustment is made to ensure high print quality at high print speed. Print the adjustment pattern to be scanned by a specified scanner. For more details, see “2.3 Banding Reduction System (BRS) / Paper According to the scanned result, a correction value is automatically Feed Amount Profile Correction (PFP) (p.26) calculated and stored into the serial flash ROM on the main board. The correction value is applied when printing in the corresponding mode. This must be carried out for efficient heat control of the CR motor. Electrical variation of the motor and the power supply board are measured to acquire correction values for them. Select the parts that you replaced. The correction values are automatically written to the main board. • Specified Scanner • PFP base scale

BRS/PFP adjustment

CR motor heat protection control

• Adjustment Program

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Revision B

Table 5-2. Maintenance Items
Maintenance Item Head cleaning Purpose This function is used to execute Cleaning efficiently when ink is not delivered from the Head properly, e.g. dot missing. The printer causes a maintenance error when the waste ink pad counter reaches its maximum. Use this to reset the counter after replacing the Waste Ink Pad. If you find the counter is close to the maximum during servicing, carry out the pad replacement and the counter reset to avoid the printer returned from the user due to the maintenance error. This must be carried out after replacing the printhead in order to fill ink inside the new printhead. The printhead becomes ready for print. Tool • Adjustment Program The head cleaning is performed automatically. After the cleaning, print a nozzle check pattern to check if all nozzles are firing ink properly. • Adjustment Program After replacing the Waste Ink Pad, reset the counter to its default. Method Outline

Waste ink pad counter

Ink charge

Filling ink inside the printhead is automatically performed. Print a nozzle check pattern to check if all nozzles are firing ink properly.

Use this to readout the EEPROM data for analysis. The all EEPROM data is automatically readout and stored as a file. Use this to readout information on the printer operations. The printer information is automatically readout.

• Adjustment Program • Adjustment Program

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Revision B

5.1.2 Required Adjustments
The table below lists the required adjustments depending upon the parts being repaired or replaced. Find the part(s) you removed or replaced, and check which adjustment(s) must be carried out.
Note : <Meaning of the marks in the table> “O” indicates that the adjustment must be carried out. “O*” indicates that the adjustment is recommended. “---” indicates that the adjustment is not required. If you have removed or replaced multiple parts, make sure to check the required adjustments for the all parts. And when multiple adjustments must be carried out, be sure to carry out them in the order given in the “Priority” row.

5.2 Using the Adjustment Program
This section describes how to judge the adjustment patterns printed by the Adjustment Program. For information on how to operate the Adjustment Program, see the instructions displayed by the Adjustment Program.

5.2.2 Head Angular Adjustment
Two patterns are printed as shown below.  Band pattern The following pattern is printed. The lines below “0 >> 80” are printed while the carriage moves from the home to the other side, and lines below “80 >> 0” are printed while the carriage returns to the home.
0 to 80 column 80 to 0 column

5.2.1 Top Margin Adjustment
Patterns are printed as shown below.

[Judging Standard] The distance from a paper top edge to a line is: • • 4 mm or more: Choose the “-” from a combobox. 2 mm or less: Choose the “+” from a combobox.
2 -16 2 -16

4

-14

4

-14

Figure 5-1. Top Margin Adjustment Pattern How to Judge
6 -12 6 -12

Measure the distance from the top edge of paper to the printed line, and enter any one of the “-”, “0”, “+” according to the judging standard. Figure 5-2. Head Angular Adjustment (Band) Pattern How to Judge Examine the printout patterns and enter the value (-16 to 16) for the most straight lines. Additional information When “16” or “-16” is the most straight lines, it indicates that the printhead is not installed correctly. Reassemble the printhead and carry out this adjustment again.
C H E C K P O IN T

Example for judgement

NG

OK

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 Microweave Pattern

Revision B

5.2.3 Bi-D Adjustment
The pattern shown below is printed for each of the 7 print modes.

Examine the printout +3 to -3 patterns and select the value for the group of which the gaps between the 2 color bars are the smallest. Additional information If no appropriate pattern is found, reassemble/replace the Print Head.
C H E C K P O IN T

Figure 5-4. Bi-D Adjustment Pattern How to Judge Find the pattern with no gaps or overleaps of the left and right pattern, and enter the value of that pattern. Additional information
Gap

Example for judgement

If an appropriate pattern is not printed, enter the nearest value and then print the patterns again.
C H E C K P O IN T

Enter the value for the line that is exactly 5mm away from the paper edge for each of the left, right, top and bottom. Example: In the left figure, enter “0” (top), “0” (right), “5” (bottom) and “-3” (left).  First dot position adjustment How to Judge Enter the value for the point where the PW adjustment pattern line and the First dot position adjustment pattern line overlap on the left of the paper. Example: In the left figure, enter “2” since the lines overlap at “2” position.

Figure 5-7. PF Adjustment (bottom margin area) Pattern How to Judge Enter the value for the one that has no gap or overlap between the upper block and the lower block. Example: In the above figure, “0” should be selected. Additional information In case that all patterns have gap or overlap, select the value for the pattern which has the least gap or overlap, and print the pattern again.
C H E C K P O IN T

Example for judgement
Overlap Gap

Example for judgement

NG

OK

NG

NG

OK

NG

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Revision B
C A U T IO N

5.2.6 PG Adjustment
Described below is the platen gap (PG) adjustment.  Purpose: Adjust the distance between the head surface and the Paper Guide Front Assy (platen) properly and adjust the parallelism on the 0th column side and on the 80th columns side to ensure reliable print quality. Once the Carriage Assy and/or Adjustment Bushes have been removed or whenever necessary for any other reason, make this adjustment to correct the deviation of the platen gap. Table 5-5. PG Positions
Position PG Size (mm) Application for Printing (selected from PG flag list for normal/head rubbing) Sequence Application Cleaning CR measurement, VH detection CR home position seek

  

The thickness gauge to be used must be free from dust and dirt and from deformation. Be sure to clean it before use. Take care that the Print Head is not soiled or scratched. To ensure high accuracy of adjustment, install new ink cartridges in the carriage, and move the carriage right and left by pulling the belt without holding the carriage. Make this adjustment after installing the mechanism unit in the Housing Lower. (Install the Linear Scale after adjustment.) Refer to “4.4.1 Removing the Printer Mechanism” (p.69) With EPSON Stylus Photo R280/R285/R290, four stages of PG setting are available by means of the APG Mechanism. However, make this adjustment with the mechanism in the minimum PG position (PG-: 1.2 mm). (Refer to “4.4.4 APG Unit” (p.75) and below.)

Install new ink cartridges in the carriage. Remove the Cable Holder Frame. (Fig. 4-73) Check that the APG Assy and the carriage are in the PG-position. (Fig. 5-8) Move the carriage to the center of the platen, and place 1.15 mm thickness gauge on the left aligning its left edge with the second rib of the Front Paper Guide. And place another 1.15 mm thickness gauge on the right aligning its right edge with the rightmost rib of the Front Paper Guide. (Fig. 5-9)

The Printhead must come in contact with the 1.3 mm thickness gauges but must not come in contact with the 1.15 mm thickness gauges.

Pull the belt to move the carriage Gauge (1.15 or 1.3mm)

NOTE: The thickness gauge must not be set over the leftmost rib on the Front Paper Guide. 5. 6. Pull the Timing Belt to move the carriage to the left end. If the carriage comes in contact with the gauge, adjust the Left Parallelism Bush to raise the carriage to a position where the Printhead does not come in contact with gauge. Pull the Timing Belt to move the carriage to the right end. If the carriage comes in contact with the gauge, adjust the Right Parallelism Bush to raise the carriage to a position where the Printhead does not come in contact with gauge. Move the carriage to the middle area of the platen, and place 1.3 mm thickness gauges at the left and right ends of the platen.
~Left side~

7. 8.

Figure 5-9. PG Adjustment 1
~Right side~

9.

10. Pull the Timing Belt to move the carriage to the left end. 11. If the carriage does not come in contact with the gauge, make the adjustment again. 12. Pull the Timing Belt to move the carriage to the right end. 13. If the carriage does not come in contact with the gauge, make the adjustment again. 14. Mark the indicated graduation position of the right and left Parallelism Bush, and tighten the screws. (Screw tightening torque: 0.8±0.1 N•m)

CR Guide Shaft UP

CR Guide Shaft DOWN

CR Guide Shaft

CR Guide Shaft UP

CR Guide Shaft DOWN

Figure 5-10. PG Adjustment 2

Chapter 5 Adjustment

5.2 Using the Adjustment Program

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Revision B
The following are the scanners that can be used for scanning the pattern in BRS/PFP adjustment. When starting up the adjustment program, select the scanner to use. Table 5-7. Specified Scanner for BRS/PFP Adjustment

For overview of BRS/PFP Adjustment, refer to Chapter 2 “2.3 Banding Reduction System (BRS) / Paper Feed Amount Profile Correction (PFP) (p.26) Be sure to have a specified scanner ready beforehand as it is necessary to carry out the adjustment. Before scanning, confirm that the document table is free from any dirt or stain.

Depending on the sensor type of the scanner to use for the adjustment, drying time required after the BRS adjustment pattern has been printed differs. For PFP adjustment pattern/PFP check pattern, drying time is not required.  For “CCD” sensor: Printed pattern can be scanned straight away. (Drying time of about 2 minutes is recommended.)  For “CIS” sensor: Printed pattern needs to be dried more than 5 minutes.
Calculate correction value

PFP

---

 Specified Scanner to perform the adjustment
C A U T IO N

 

Install the driver of the scanner to the PC in advance. As the profile required for the adjustment is not prepared for scanners other than the ones specified below, BRS/PFP Adjustment can not be carried out by the other scanners.

When an error is displayed in the Adjustment program, check the points below, then carry out the adjustment again. If an error occurs even after checking the points below, change the scanner with a different one and carry out the adjustment again. 1. Check that the printer that printed the pattern and the printer to register the adjustment value is the same. 2. Check that the printed pattern is placed on the document table of the scanner correctly. 3. Check that there is no gap between the PFP Base Scale and the pattern printed sheet. 4. Check that the scanner glass surface and the PFP Base Scale is free from any dirt or dust.

END

d e
Judge it is mechanism’s failure. Remove it to locate the defective part and replace, then reassemble it.

Error? OK

NG

Figure 5-12. BRS/PFP Adjustment Flow
Note*: When a PFP pattern is judged as NG, repeat the steps as described below. First time NG: retry from c step Second time NG:retry from d step Third time NG: perform e step

Revision B
 Scanning the BRS Adjustment Pattern 5. Set the printed pattern and the PFP Base Scale on the document table and click the [Scan] button on the “3. Scan Test Pattern” column. According to the scanned result, BRS calibration values are automatically calculated and are written to the serial flash ROM. If an error occurs, check that the document table glass and the scale is clean, and the scale/adjustment pattern is not tilted, then repeat from step 5. Be careful of the following when setting the PFP Base Scale, and the adjustment pattern on the scanner.  Place the scale on the document glass aligning the scale corner with the scanner origin position.  Place the pattern-printed sheet along the scale as shown in the figure below. Make sure to place it parallel to the scale, with no gaps.

In the Adjustment program, the identification code is used to distinguish whether the printer that printed the pattern and the printer to register the adjustment value is the same. Make sure to let the printed pattern dry for more than 5 minutes if using CIS sensor type scanner. When using CCD sensor type scanner, the printed pattern does not need to be dried before scanning. Refer to “Table 5-7. Specified Scanner for BRS/PFP Adjustment” (p.107)

Scanner Document Table

Figure 5-14. PFP Base Scale and BRS Adjustment Pattern Position (Viewed from the document glass of the scanner)

Revision B
 Scanning the PFP Adjustment Pattern 4. 5. Set the PFP Base Scale and the PFP test pattern on the document table and click the [Scan] button on the “3. Scan Test Pattern” column. According to the scanned result, PFP calibration values are automatically calculated and are written to the serial flash ROM. If an error occurs, check that the document table glass and the scale is clean, and the scale/adjustment pattern is not tilted, then repeat from step 4. Be careful of the following when setting the PFP Base Scale and the adjustment pattern on the scanner.  Place the scale on the document glass aligning the scale corner with the scanner origin position.  Place the pattern-printed sheet along the scale as shown in the figure below. Make sure to place it parallel to the scale, with no gaps.

Referring to Fig. 5-18 check that there is no white or overlapped bands in all the check patterns. If any bands are found, carry out the steps below.

1. Re-print the check pattern to see if the bands appear again. 2. When bands appear in Step 1, try the PFP adjustment again from the
beginning. 3. When bands appear even after the re- adjustment in step 2, determine that it is the mechanism failure and carry out check/reassemble of the parts that was removed/replaced.
Normal Area Check Pattern Bottom Edge Area Check Pattern

6.1 Overview
This section provides information to maintain the printer in its optimum condition.

6.1.2 Service Maintenance
If any abnormal print (dot missing, white line, etc.) has occurred or the printer indicates the “Maintenance request error”, take the following actions to clear the error. (This error is displayed in EPSON Status Monitor 3 and with LED.)

6.1.1 Cleaning
This printer has no mechanical components which require regular cleaning except the Print Head. Therefore, when returning the printer to the user, check the following parts and perform appropriate cleaning if stain is noticeable.
C A U T IO N

6.1.2.1 Print Head cleaning
When dot missing or banding appears on images, run the Print Head cleaning cycle.* The cleaning be activated from the control panel, the printer driver utility or the Adjustment program.
Note * : This printer has three manual cleaning modes. The appropriate cleaning mode is automatically selected and performed according to various conditions. The ink consumption amount for manual cleaning varies depending on the mode.

 Never use chemical solvents, such as thinner, benzine, and acetone to clean the exterior parts of the printer like the Housing. These chemicals may deform or deteriorate the components of the printer.  Be careful not to damage any components when you clean inside the printer.  Do not scratch the coated surface of the PF Roller Unit. Use soft brush to wipe off any dusts.  Use a soft cloth moistened with alcohol to remove the ink stain.  When using compressed air products; such as air duster, for cleaning during repair and maintenance, the use of such products containing flammable gas is prohibited.

6.1.2.2 Maintenance request error
Ink is consumed also for cleaning and flashing operations. When the ink is used for cleaning and flashing operations, the ink is drained to the Waste Ink Pads via the Pump. The amount of the waste ink is stored as the waste ink counter into the EEPROM. When the waste ink counter has reached the limit of the absorbing capability of the Waste Ink Pads, the maintenance request error is displayed. This printer takes the ink evaporation amount into consideration, therefore the counter limit differs depending on how often printing is made.
A D J U S T M E N T R E Q U IR E D

 Exterior parts Use a clean soft cloth moistened with water, and wipe off any dirt. If the exterior parts have ink stain, use a cloth moistened with neutral detergent to wipe it off.  Inside the printer Use a vacuum cleaner to remove any paper dust.  LD Roller When paper loading function does not operate because of a drop in friction force of the LD Roller due to paper dust, use a soft cloth moistened with alcohol to remove the paper dust.

For display of Maintenance request error, see the following.  Chapter3 "Troubleshooting" (p.27)

When the maintenance request error appears, replace the Waste ink pads with a new one and reset the waste ink counter using the Adjustment program. If the waste ink counter is close to its limit, recommend that the Waste ink pads will be replaced with new one. This is because the “Maintenance request error” will may occur after returning the repaired product to the customer.

Chapter 6 Maintenance

6.1 Overview

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Revision B

6.1.3 Lubrication
The type and amount of the grease used to lubricate the printer parts are determined based on the results of the internal evaluations. Be sure to apply the specified type and amount of the grease to the specified parts during servicing mentioned below.  When parts that need lubrication is been replaced  As the need arises during disassembly/reassembly of the printer
C A U T IO N
Driven Pulley Holder

<Lubrication Points> Two points on bushings for the Pulley Shaft One point at the center of the Pulley Shaft <Type> G-71 <Application Amount> ø 1 x 1 mm x 3 points

 Never use oil or grease other than those specified in this manual. Use of different types of oil or grease may damage the component and adversely affect the printer operation.  Observe the specified amount. Never apply excess. Table 6-1. Specified Lubricant
Type Grease Grease Name G-71 G-77 EPSON code 1304682 1455324 Supplier EPSON EPSON
Driven Pulley Holder

LUBRICATION OF CR UNIT
<Lubrication Points> On the back of the Main Frame where contact with the CR Unit <Type> G-71 <Application Amount> 160 ± 20mg <Application Timing> Apply after installing the CR Unit <Remarks> Apply with Injector  Do not apply to the both ends (40mm from edge)  Move the CR Unit the left/right to spread the grease evenly.

CR Shaft Retaining Spring

Main Frame (upper rear)
(1) 5 mm from the top edge (2) 10 mm from the top edge

Left

Right

2

1
Application Point

Figure 6-11. Lubrication for the CR Shaft Retaining Spring

Except both ends (40mm)

Figure 6-9. Lubrication of the Main Frame (1)

Chapter 6 Maintenance

6.1 Overview

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Revision B

Contact point between CR Unit and CR Shaft (1)
CR Shaft

<Lubrication Points> Contact point between CR Unit and the CR Shaft <Type> G-71 <Application Amount> 210 ± 20mg x 2 points <Application Timing> Apply before installing the CR Unit <Remarks> Apply with Injector  After lubrication, move the CR Shaft to left and right by 60mm while rotating it, to spread the grease evenly.  Make sure that the Timing Belt is free from grease.

LUBRICATION OF INK SYSTEM
<Lubrication Points> On the Main Frame where the clutch gear and spring of the Ink System contact <Type> G-71 <Application Amount> ø 1 x 1 circle <Application Timing> Apply before installing the Ink System <Remarks> Apply with Injector
Application Point